Latch for window operators



A. E. STROM 4 March 16, 1937.

LATCH FOR WINDOW OPERATORS Filed Sept. 19, 1935 @gua Patented Mar. 16,1937 UNITED STATES PATENT OFFICEv 1 Claim.

This invention relates to a window construction and it aims to providemeans whereby the sashes are slidably mounted with the elimination ofweights, cords, pulleys and hardware such as is used at present ondoublehung sashes.

from the cost of the parts mentioned, the cost of window frames islikewise reduced inasmuch as pockets therein are not required.

It is further aimed to provide such a construction which will eliminateweather-stripping, rattling of Windows, render the Window burglarproofin closed position, and cause one sash to raise as the other lowers,through movement of the other.

The more specific objects and advantages will become apparent from aconsiderationof the description following taken in connection withaccompanying drawing illustrating an Operative embodiment. 1

In said drawing:-

Figure 1 is a view of an improved window construction according to theinvention in front elevation, partly broken away;

Figure 2 is an enlarged vertical sectional view taken on the line 2-2 ofFigure 1;

Figure 3 is a horizontal sectional view taken substantially on the line3-3 of Figure 1 Figure 4 is a horizontal sectional View taken on theline 4-4 of Figure l; and

Figure 5 is a horizontal sectional'view taken on the line 5--5 of Figure4.

Referring specifically to the drawing, I designates a conventionalwindow frame in which a pair of relatively slidable sashes II aremounted by usual stops or otherwise as at I2, such sashes carryinglights I3.

Countersunk in the inner surfaces of the side Stiles or uprights I4 ofthe window frame Ill are plates I5, the same having flanges I6 throughwhich screws or other fastenings I1 are passed to secure the plates inplace. Journaled in said plates I5 is a rotatable shaft I8 which isdisposed between the meeting rails of the sashes I I. Keyed to suchshaft I8 are pinions I9 enmeshed with rack bars 20 screwed or otherwisesecured as at 2| to the sashes. Obviously, the rack bars 29 may be madeof cast metal or rolled, or otherwise as preferred, and the pinions I9may be made of any suitable material such as cast iron, copper,

steel, fibre, brass, aluminum, or bakelite.

As a result of the construction described, one sash will raise as theother sash lowers, upon Aside sliding either sash,` thus simultaneouslyopening the window at the top and bottom, Or simultaneously closing themat the top and bottom. Y

The sashes are ordinarily locked against movement in closed position andin any of the 5 open positions Vthrough the engagement of a latch 22between teeth of one of the pinions I9. Such latch is preferably pivotedas at 23 within a slot 24 of one of the plates I5. A leaf spring 25fastened to the last mentioned plate as at 26, 1o is engaged with oneend of the latch 22 to prevent displacement thereof and urge closingmovement.

Said latch 22, however, may be raised or disengaged from the adjacentpinion I9 in order to 15 permit the sashes to slide and to this end anoperating rod 2l is slidably mounted in the last mentioned plate I5 in arecess 28 thereof as well as slidably mounted through the adjacent partof the frame I0. Operator or rod 21 has a knob 20 29 at one end thereofand at its other end has a cam 30. When the rod 2l is pulled forward thecam 30 through engagement with the latch 22, elevates such latch out ofengagement with the pinion I 9, and holds it in that position so that 25the sashes may be adjusted. The rod 21, however, after adjustment isadapted to be pushed inwardly, thus moving the cam 3l) from beneath thelatch 22 and the latter reengaging the pinion I9 through the urgency ofthe spring 25. 30

Various changes may be resorted to, provided they fall within the spiritand scope of the invention.

In combination with a window-operator shaft 35 having a pinion thereon,a plate disposed in parallelism to the pinion and in which one end ofsaid shaft is journaled, said plate having a slot extendingtherethrough, a latch in said slot engageable between the teeth of saidpinion, means 40 pivoting the latch to the plate, a spring leaf securedto one side of the plate crossing said slot and engaging one end of thelatch to urge the latch into engagement with said pinion, said platehaving a slot therethrough disposed at a 45 right-angle to the rstmentioned slot and opening at the base of the latter, and an operatingmemberv operable in the second mentioned slot having a cam engageablewith the latch to disengage the latter from the pinion. 50

ADOLPI-I E. STROM.

